Magnetic metal powder and method of producing the powder
    22.
    发明申请
    Magnetic metal powder and method of producing the powder 审中-公开
    磁性金属粉末和粉末的制造方法

    公开(公告)号:US20050051241A1

    公开(公告)日:2005-03-10

    申请号:US10812078

    申请日:2004-03-30

    申请人: Kazuyuki Tohji

    发明人: Kazuyuki Tohji

    摘要: A magnetic metal powder having fluidity is provided which is composed of FePt nanoparticles synthesized by the polyol synthesis method that possess fct (face-centered tetragonal) structure and exhibit crystal magnetic anisotropy from immediately after synthesis. Specifically, there is provided a magnetic metal powder having fluidity which is composed of magnetic metal particles whose main components and the contents thereof are represented by the following general formula (1): [TXM1-X]YZ1-Y   (1), where T is one or both of Fe and Co, M is one or both of Pt and Pd, Z is at least one member selected from the group composed of Ag, Cu, Bi, Sb, Pb and Sn, X represents 0.3˜0.7, and Y represents 0.7˜1.0, the balance being impurities unavoidably incorporated during production, which magnetic metal powder has a volumetric ratio of ferromagnetic structure (face-centered tetragonal ratio) as measured by Mossbauer spectroscopy in the range of 10˜100%, saturation magnetization σs of 20 emu/g or greater, and average primary particle diameter by transmission electron microscopic observation (TEM) of 30 nm or less.

    摘要翻译: 提供具有流动性的磁性金属粉末,其由具有fct(面心四方)结构的多元醇合成方法合成的FePt纳米颗粒组成,并在合成后立即显示晶体磁各向异性。 具体地说,提供一种具有流动性的磁性金属粉末,其主要成分和含量由以下通式(1)表示的磁性金属颗粒组成:[TXM1-X] YZ1-Y(1),其中T 是Fe和Co中的一种或两种,M是Pt和Pd中的一种或两种,Z是选自由Ag,Cu,Bi,Sb,Pb和Sn组成的组中的至少一种,X表示0.3〜0.7, Y代表0.7〜1.0,余量是生产过程中不可避免地掺入的杂质,磁性金属粉末具有通过Mossbauer光谱法测量的铁磁结构体积比(面心四边形比),范围为10〜100%,饱和磁化Sigmas 20emu / g以上,透射电子显微镜观察(TEM)的平均一次粒径为30nm以下。

    X-ray spectrometer and apparatus for XAFS measurements
    23.
    发明授权
    X-ray spectrometer and apparatus for XAFS measurements 有权
    X射线光谱仪和XAFS测量仪器

    公开(公告)号:US06456688B1

    公开(公告)日:2002-09-24

    申请号:US09643780

    申请日:2000-08-22

    IPC分类号: G21K106

    摘要: An X-ray spectrometer having a curved crystal monochromator which diffracts a continuous X-ray beam from an X-ray source to produce a monochromatic X-ray beam. An angle of incidence of the continuous X-ray beam can be changed with respect to the monochromator so as to change the wavelength of the monochromatic X-ray beam which is focused on and taken out from a receiving slit. The X-ray source, the monochromator and the receiving slit must be positioned always on a Rowland circle. The X-ray source and the monochromator can be moved so that the angle of incidence changes, while the receiving slit remains always stationary and the direction of an X-ray path from the center of the monochromator to the receiving slit remains always constant. Such an X-ray spectrometer is usable as an X-ray irradiation system of XAFS (X-ray Absorption Fine Structure) apparatus so that XAFS measurements require no movement of the sample.

    摘要翻译: 一种具有弯曲晶体单色仪的X射线光谱仪,其衍射来自X射线源的连续X射线束以产生单色X射线束。 可以相对于单色仪改变连续X射线束的入射角,以便改变聚焦在接收狭缝上并从接收狭缝中取出的单色X射线束的波长。 X射线源,单色仪和接收狭缝必须始终位于Rowland圆。 可以移动X射线源和单色仪,使得入射角变化,而接收狭缝保持总是静止,并且从单色器的中心到接收狭缝的X射线路径的方向总是保持恒定。 这种X射线光谱仪可用作XAFS(X射线吸收精细结构)装置的X射线照射系统,使得XAFS测量不需要样品的移动。